I think the production numbers of Sinbad (12900) say it all, it was the most popular System One pinball. It was also the most produced pinball by Gottlieb, Em or SS!! And yes I have one...................
Quoted from Collin:There are a few hidden System 1 gems. Totem was my first pin, and I still think it's fantastic. I've been looking for a Dragon casually for a little while now. They're in kind of a weird place gameplay-wise between EM and other early SS titles, but I think they're actually quite a bit of fun!
From a technical standpoint, though, it wasn't good hardware design for a pinball machine. It was a rushed, and poorly thought out.